765whp Single Turbo E90 335i

N54 • 765whp • DOC Race Top Mount Single Turbo Kit (Pulsar 6766) • 6MT

Owner: 335BYE_

Build Specifications

Engine ~ N54 (Alibaba Built Bottom End)

Burger Motorsports Dual Oil Catch Can
Hard Motorsports AC Delete
Turner Motor Mounts 80A
80A Transmission Mounts
NGK 97506 Spark Plugs
11mm ARP Head Studs
3.5 Bar TMAP Sensor
Pinned Crank Hub
Kingtech Pistons
Kingtech Rods
ACL Bearings
Factory Coils

Turbo Setup

DOC Race Top Mount Single Turbo Kit

Pulsar 6766 Turbocharger
Split Manifold
Dual Dump
Dual Wastegate
3.5 MAC Solenoid Wired to OE Boost Solenoid
VRSF Charge-pipe with Vibrant HD Clamps
3.5” Single Straight Pipe Exhaust
VRSF 7.5” Stepped HD FMIC
Turbosmart Blow Off Valve

Fuel System

Speedsty Motorsports Dual Relay Upgraded EKPM

Fuel Labs 525 Pressure Regulator (25–90 PSI) with Return Line
Aluminum Intake Manifold with Top Mount PI Rail
Dual Bucketless PR Stage 3.75 V2 LPFP Setup
Ethanol Content Analyzer (ECA)
Motiv Motorsport Reflex Plus
Custom Fuel Line Upgrades
PI Rail Pressure Sensor
Index 12 Fuel Injectors
DME Controlled Boost
Single Bank Fueling
950cc PR Injectors

Drivetrain

Motiv Motorsport ST Full Face Twin Disc Clutch with Flywheel (Rated for 1027 ft-lb Torque)
Auto Differential Pumpkin with MFactory LSD (3.46 Final Drive)

OEM 6MT Swap w/ Stock Manual Driveshaft
Gear Ratios

1st: 4.06
2nd: 2.40
3rd: 1.58
4th: 1.19
5th: 1.00
6th: 0.87

Suspension & Wheels/Brakes

Suspension

Strange Double Adjustable Drag Shocks
Custom Top Hats and Fittings
Fully Reinforced Subframe
Polyurethane Subframe & Differential Bushings
Fully Adjustable SPL Parts Rear Upper & Lower Control Arms

Wheels/Brakes

275/50/15 Mickey Thompson Tires
AD-E Rear Drag Brake Kit
15x10 Weld Rear Wheels

About the Build

Built for both street and drag strip performance, this E90 335i is powered by a built N54 featuring a DOC Race top mount single turbo kit paired with a Pulsar 6766 turbocharger, putting down an impressive 765whp.

The setup combines serious horsepower with a factory 6MT manual swap, reinforced drivetrain components, and a thoroughly upgraded fuel system engineered to support high boost and ethanol performance reliably.

Fuel system upgrades include dual bucket-less pumps, Reflex-controlled port injection, upgraded injectors, custom fuel line upgrades, and a Speedsty Motorsports Dual Relay EKPM Kit configured to trigger the secondary pump.

The drivetrain and suspension setup were equally prioritized, featuring a Motiv twin disc clutch, MFactory LSD, reinforced rear subframe, SPL rear suspension components, and Strange double adjustable drag shocks. Weld rear wheels wrapped in Mickey Thompson drag radials help put the power down effectively.

Inside, the car maintains a focused motorsport-inspired interior with Sparco seating, harnesses, a CAE Ultra Shifter, and additional Hard Motorsport components throughout the cabin.

Owned by @335BYE_, this build is a perfect example of a well-rounded high horsepower N54 setup that balances drivability, reliability, and serious performance.

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